STEP 1: GETTING STARTED

Transcription

1 GE Measurement & Control SCOUT and vbseries Quick Start Guide PRECAUTIONS Do NOT attach the accelerometer or tachometer to a high potential voltage source. Do NOT place the mounting base near objects that are sensitive to magnetic fields. Ensure the cables cannot become entangled with any moving machinery. Handle the instrument with care (as you would a camera). Switch the instrument On/Off. KEYPAD QUICK REFERENCE Cancel/Go Back Press and hold takes you back to the Main Menu. Accept/Go Forward to the next menu. Activate alternate functions for each key In some menus, the keys can perform several functions. To see which options are available, press Alt and toggle the key functions. Help Key This expands the onscreen icons with easy-to-see hint labels. Press and hold for detailed help text. Navigate Up/Down a list Press and hold to move through a list more rapidly. Navigate Left/Right Also expands and collapses levels in the navigator, and directs movement between splitscreen menus (e.g. the Record Review menu). STEP 1: GETTING STARTED 3 Set the date and time. to power up the instrument. 5 Press twice to access the Date/Time menu. 1 Ensure the instrument is switched off. 2 Plug the power adapter into a standard power outlet. 2 Attach the other end to the instrument charger socket. Charge the battery for two hours, then disconnect. 6 Press and use the number keys to set the time > Press. 7 Press and use the number keys to set the date > Press. You can start all instrument operations from the main menu. To return to the main menu from any screen, press and hold. SCOUT and vbseries Quick Start Guide Measurement, Analysis, and Machine Balancing 1

2 STEP 2: SET UP A MEASUREMENT 1 From the main menu, press to display the Measure menu. From here you can select the type of measurement to take. 2 Press to select Spectrum Waveform. 3 If you want to change the default settings, use the keys beside each onscreen icon to make your changes. then to set up your sensor. 5 Press to enable channel 1. 6 Press then and use the keys beside each onscreen icon to change the settings as required. 7 Press repeatedly to return to the Spectrum Waveform menu. STEP 3: MEASURE THE VIBRATION 1 Attach the sensor connector to the channel 1 input of the instrument. 2 Mount the sensor firmly onto the measurement location using the magnetic mounting base. 3 Press to start the measurement The instrument displays the vibration spectrum, waveform, and overall power level. 4 Use or to move the cursor and read the vibration levels. 5 Press then to save and choose a location to save to. STEP 4: SAVE THE RECORDING To save to an existing machine: 1 Use or to move the selection bar. 2 Press to expand the machine structures and reveal the locations. 3 Press to select the highlighted location. to save the recording to the location. To create a new machine: 1 Press. 2 Use the character keys to enter the machine s name. MORE: See Entering Characters below. 3 Press 5 Press to create a point. to create a location. to save the recording to the new location. SCOUT and vbseries Quick Start Guide Measurement, Analysis, and Machine Balancing 2

3 ENTERING CHARACTERS To enter letters or numbers, repeatedly press the keys beside the onscreen characters until the required character appears. EG: To enter the letter c press 1 To enter the number 1, press 2 To enter a space, press. 3 To enter punctuation or 0, press. 4 To delete a character, press. four times. 5 To display hint labels, press then. three times. 6 When you have finished entering characters, press Add your instrument to Ascent database 1 Start Ascent by selecting Start > All Programs > Commtest > Ascent > Ascent. 2 Click Edit > Manage > vb Instruments. 3 Click Add > vbx Portable. 4 Double-click your instrument to add it to the Ascent database. 5 Click Cancel 6 Click Close. to return to the previous screen. STEP 5: TRANSFER RECORDED DATA TO PC Install Ascent 1 Install the Ascent software on your PC by inserting the CD-ROM and following the onscreen instructions. 2 Use the supplied data transfer cable to connect the instrument to a PC. 3 Press to power up the instrument. 4 Install the software driver (if prompted). Transfer data from instrument to Ascent 1 On the Ascent toolbar, click the Receive button. 2 Select your instrument from the Instrument dropdown list. 3 Tick the checkbox beside the folder(s) where you saved your data. 4 Click Receive to transfer the selected folder(s). NOTE: The area on the left of Ascent is the navigator. The navigator tree forms the upper part of this section. It displays your machines, points, and measurement locations. The lower part of the navigator shows any items that are contained in an item you select in the navigator tree. For example, if you select a point on the Navigator Tree, any bearings defined on that point will display in the section below the screen. Recordings are labeled with the time, date, and measurement type. 5 Double-click a recording to plot it You have now successfully recorded vibration data and plotted the data on your PC. 6 To save your data, click the Save button on the toolbar. MORE: For detailed instructions on how to use Ascent, use the Help menu to access the Software Reference Guide and online tutorials. SCOUT and vbseries Quick Start Guide Measurement, Analysis, and Machine Balancing 3

4 MACHINE BALANCING INTRODUCTION Please read the PRECAUTIONS for Measurement and Analysis provided earlier in this document. This is a quick start guide to single plane balancing only and is typically suited for rigid rotors with diameters at least twice their lengths. For more information on dual plane balancing, please see your Instrument Reference Guide. Good results can only be obtained if the vibration is caused by uneven mass distribution in the rotor. Attempting to balance a rotor that has other problems will generally NOT reduce the vibration level. STEP 1: SET UP SENSOR Bearing Rotor 1 Attach the sensor firmly along the centerline of the bearing using the magnetic mounting base. Ensure the sensor is: Close to the bearing Along the bearing centerline Firmly attached IMPORTANT! You will need to attach the sensor correctly to obtain accurate results. 2 Attach the sensor connector to the channel 1 input of the instrument. Reflective tape (5 mm x 15 mm approx) STEP 2: SET UP TACHOMETER Reflective tape Rotor Tachometer Range 10 cm to 2 m Rotating machine part 1 Stop the machine. 2 Stick a piece of reflective tape on a machine part that rotates at the speed of the rotor. 3 Attach the tachometer to a stationary surface so that the sensor is slightly offset from the centerline of the shaft, but parallel to the reflective tape. 4 Attach the tachometer connector to the tachometer input of the instrument. SCOUT and vbseries Quick Start Guide Measurement, Analysis, and Machine Balancing 4

5 STEP 3: TAKE INITIAL READING 1 Clean the rotor. 2 Start the machine and let the rotor settle to its normal operating speed. 3 Press to power up the instrument. to display the Balance menu. 5 Press to set up the balance job. 6 Press to take an initial reading of the imbalance. TIP: Read the onscreen messages to ensure your instrument and sensors are connected. NOTE: The instrument will display the rotor speed, vibration level, and vibration phase angle. 7 Allow the readings to stabilize, then press. STEP 4: ATTACH TRIAL WEIGHT 1 Stop the machine. 2 Attach a trial weight to the rim of the rotor The instrument will suggest a trial weight mass and weight position if you entered machine information during the setup stage. 3 Press and use the number keys to enter your trial weight mass. to enter the weight position. Ensure the added weight: Will not loosen when the rotor spins Will not obstruct machine motion Includes the weight of any mechanism used to hold it in place Is of sufficient mass to change the imbalance so the instrument can perform accurate calculations STEP 5: TAKE TRIAL WEIGHT READING 1 Start the machine and let the rotor settle to its normal operating speed. 2 Press reading. to take the trial weight NOTE: The instrument will display the rotor speed, vibration level and vibration phase angle. 3 Allow the readings to stabilize then press 4 The instrument will ask if you intend to leave the trial weights in place or remove them > Press the appropriate key as directed. NOTE: With the initial and trial readings completed you can begin correcting the imbalance. SCOUT and vbseries Quick Start Guide Measurement, Analysis, and Machine Balancing 5

6 STEP 6: ATTACH CORRECTION WEIGHTS Reference mark Rotation Trial weight Correction weight Correction angle (WR) Ensure the correction weight: Will not loosen over time Will not collect dirt Will not obstruct machine motion Includes the weight of any mechanism used to hold it in place The instrument will display the weight required to correct the original imbalance, and the position to attach or drill out the correction weight. 1 Stop the machine. 2 Attach or drill out the correction weight in the direction and angle indicated Against Rotation (AR) or With Rotation (WR) The displayed correction angle will be relative to your chosen weight reference mark. 3 Press and use the number keys to enter your correction weight mass. to enter the weight position. STEP 7: CHECK RESULTS 1 Start the rotor and let the machine settle to its normal operating speed. 2 Press to take the reading. The instrument will display the vibration level with the imbalance corrected. You can finish balancing at this time and view the balancing report, or use additional trim weights to improve the balance level. You have now completed a basic machine balancing routine. To further reduce the imbalance, press and continue trim balancing by attaching correction weights. To learn how to save and view the balance job, or produce a balancing report, please see the vbseries Instrument Reference Guide. COPYRIGHT 2014 GE Energy (New Zealand) Ltd. Technical Support (North America) Bntechsupport@ge.com help@commtest.com Toll free (US) Phone: SCOUT and vbseries Quick Start Guide Measurement, Analysis, and Machine Balancing 6